Don't create a new module for bp2build conversion.
A performance improvement for bp2build as Blueprint/Soong no longer have
the overhead of additional modules. The creation of these modules
results in:
* traversal of additional modules for each subsequent mutator
* synchronization over a go channel to collect newly created modules:
https://cs.android.com/android/platform/superproject/+/master:build/blueprint/context.go;l=2594,2600;drc=1602226f23181b8c3fbfcaf3358f0297e839d7d3
We avoid both of these by storing the information directly in the
underlying module.
Also as a fringe benefit, removes some necessary boilerplate for
conversion.
For benchmarks, reduces runtime ~1% for 1% converted, ~24% for 100%
converted. See more: go/benchmarks-for-https:-r.android.com-1792714
Test: ran benchmarks/tests in bp2build
Test: build/bazel/ci/bp2build.sh
Change-Id: Ie9273b8cbab5bc6edac1728067ce184382feb211
diff --git a/cc/library_headers.go b/cc/library_headers.go
index 1a276f4..44a7a71 100644
--- a/cc/library_headers.go
+++ b/cc/library_headers.go
@@ -111,18 +111,6 @@
System_dynamic_deps bazel.LabelListAttribute
}
-type bazelCcLibraryHeaders struct {
- android.BazelTargetModuleBase
- bazelCcLibraryHeadersAttributes
-}
-
-func BazelCcLibraryHeadersFactory() android.Module {
- module := &bazelCcLibraryHeaders{}
- module.AddProperties(&module.bazelCcLibraryHeadersAttributes)
- android.InitBazelTargetModule(module)
- return module
-}
-
func CcLibraryHeadersBp2Build(ctx android.TopDownMutatorContext) {
module, ok := ctx.Module().(*Module)
if !ok {
@@ -155,11 +143,5 @@
Bzl_load_location: "//build/bazel/rules:cc_library_headers.bzl",
}
- ctx.CreateBazelTargetModule(BazelCcLibraryHeadersFactory, module.Name(), props, attrs)
+ ctx.CreateBazelTargetModule(module.Name(), props, attrs)
}
-
-func (m *bazelCcLibraryHeaders) Name() string {
- return m.BaseModuleName()
-}
-
-func (m *bazelCcLibraryHeaders) GenerateAndroidBuildActions(ctx android.ModuleContext) {}